Arrays withinn regex will be treated as alternations of its elements.
Preceding | or || will change its behaviour, || means sequential alt-
ernation and | LTM, while the LTM is just a basic approach and needs
tweeking.

* update release_guide
* add a template for the announcement for next month, provided by uvtc++
the format we use is quite close to markdown already, and writing it
in proper markdown makes them display nicely on github, and easier to
translate to HTML

Make it an archetype, and then opt classes in. Also tweak the exception
type that is used to be more general, and try to make the wording of it
general enough for all the cases we could get it, so it won't mislead.

…tics.
Also make sure that the line separator is encoded correctly.
Now, if only someone could show me a good way to make the transcoding happen
at attribute assignment and not at every readline call...